Vitiligo: Overview Vitiligo: This skin disease often forms on both sides of the body as shown here on the knees. Vitiligo (vit-uh-lie-go) causes the skin to lose color. Patches of lighter skin appear. Some people develop a few patches. Others lose much more skin color.
Removing and inspecting spark plugs tell you a lot about how well the engine is running and what may be causing problems. All spark plugs should be removed and checked every 30,000 miles - even if your BMW is low maintenance - you're told to change spark plugs at 100,000 miles. This prevents the plugs from seizing in the block, causing expensive repairs down the road. Always note which plug came from which cylinder.
You just need a few things to change your spark plugs. Get a socket wrench with a spark plug socket extension that's the right size for your plugs, as well as a new pair of spark plugs. 1  In the past, a gapping tool was required to fit the plugs properly, but modern spark plugs now come pre-gapped. If you're having trouble locating the spark plugs, look for the black rubbery wires running around the engine. 2  Follow them to the end and you'll find the spark plugs. 3  Check your car's owner manual for the exact location of the spark plugs and the spark plug size you need.